
function setCookie(name,value)
{
    expiredays = 1000*3600*24;
    var exdate=new Date()
    exdate.setDate(exdate.getDate()+expiredays)
    console.log(name+ "=" +escape(value)+"expires="+exdate.toGMTString())
    document.cookie=name+ "=" +escape(value)+"expires="+exdate.toGMTString()
    console.log(document.cookie)
    
}
function getCookie(c_name)
{
    if (document.cookie.length>0)
    {
    c_start=document.cookie.indexOf(c_name + "=")
    if (c_start!=-1)
        { 
        c_start=c_start + c_name.length+1 
        c_end=document.cookie.indexOf(";",c_start)
        if (c_end==-1) c_end=document.cookie.length
        return unescape(document.cookie.substring(c_start,c_end))
        } 
    }
    return null
}
function delCookie(name)
{
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval=getCookie(name);
    if(cval!=null)
    document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}
